rokon12 · November 14, 2017 14:24 · rokon12 · Nov 14, 2017
diff --git a/diningphiloshoper_Chopstick.java b/diningphiloshoper_Chopstick.java
 package com.bazlur.ds.thread.diningphiloshoper;

 /**
 * @author Bazlur Rahman Rokon
 * @since 11/14/17.
 */
 public class Chopstick {
 }
diff --git a/diningphiloshoper_DiningPhilosophers.java b/diningphiloshoper_DiningPhilosophers.java
 package com.bazlur.ds.thread.diningphiloshoper;

 /**
 * @author Bazlur Rahman Rokon
 * @since 11/14/17.
 */
 public class DiningPhilosophers {
    public static void main(String[] args) {
        Philosopher[] philosophers = new Philosopher[5];

        Chopstick chopstick[] = new Chopstick[5];
        for (int i = 0; i < chopstick.length; i++) {
            chopstick[i] = new Chopstick();
        }

        for (int i = 0; i < philosophers.length; i++) {
            Chopstick leftFork = chopstick[i];
            Chopstick rightFork = chopstick[(i + 1) % chopstick.length];

            philosophers[i] = new Philosopher(leftFork, rightFork);

            Thread t = new Thread(philosophers[i], "Philosopher " + (i + 1));
            t.start();
        }
    }
 }
diff --git a/diningphiloshoper_Philosopher.java b/diningphiloshoper_Philosopher.java
 package com.bazlur.ds.thread.diningphiloshoper;

 /**
 * @author Bazlur Rahman Rokon
 * @since 11/14/17.
 */
 public class Philosopher implements Runnable {
    private Chopstick leftChopstick;
    private Chopstick rightChopstick;

    public Philosopher(Chopstick leftChopstick, Chopstick rightChopstick) {
        this.leftChopstick = leftChopstick;
        this.rightChopstick = rightChopstick;
    }

    @Override
    public void run() {
        try {
            while (true) {
                doAction(System.nanoTime() + ": Thinking");
                synchronized (leftChopstick) {
                    doAction(System.nanoTime() + ": Picked up left fork");

                    synchronized (rightChopstick) {
                        // eating
                        doAction(System.nanoTime() + ": Picked up right fork - eating");
                        doAction(System.nanoTime() + ": Put down right fork");
                    }

                    // Back to thinking
                    doAction(System.nanoTime() + ": Put down left fork. Back to thinking");
                }
            }
        } catch (InterruptedException ex) {
            Thread.currentThread().interrupt();
            return;
        }
    }

    private void doAction(String action) throws InterruptedException {
        System.out.println(Thread.currentThread().getName() + " " + action);
        Thread.sleep(((int) (Math.random() * 100)));
    }

 }
	package com.bazlur.ds.thread.diningphiloshoper;

	/**
	* @author Bazlur Rahman Rokon
	* @since 11/14/17.
	*/
	public class Chopstick {
	}